混淆矩阵介绍以及评价指标(准确率,精确率,召回率,特异度,假警报率,G-mean,F1_score,KS值),程序员大本营,技术文章内容聚合第一站。
WHAT ACRONYMS MEAN Formula One loves an acronym, and while their use is commonplace within the sport and during TV broadcasts, they can occasionally be baffling for newcomers. Now that you understand DRS, here are four other F1 acronyms you'll likely come across while following the sport. ...
这个F Score是P和R的调和平均数(harmonic mean),β的作用是表明P与R谁比较重要。harmonic mean有个特点,就是假如其中一个P或者R比较小,那么整体就会很小,也就是对两个数中如果有特别小的数的惩罚(penalty)比较大。这是代数平均数所没有的特性。一般来说,会把β设置成1,这个时候就成为F1 Score。几何表达如下...
Ad It is the greatest sight of all for a driver who reaches it in first place in a grand prix, because it means they are the winner. Read next: What is F1’s ‘DRS’ and how does it work?Latest from thenetwork Jeremy Clarkson submits cheeky F1 offer after Oscar Piastri rescue missi...
From an infamous contract dispute to a switch prevented by injury – 8 F1 driver moves that never were Technical TECH ANALYSIS: How McLaren's MCL39 has benefitted from an 'aggressive' evolution approach Video LIVESTREAM: Watch the action from qualifying for Round 8 of the...
With the FIA having recently unveiled the new set of F1 regulations for 2026 onwards, a number of changes will come into force for the next generation of cars. But what impact will this have on the design?
1、 mean(v.) + n. 意思是: 例如:What do you mean by that? 你这句话到底是什么意思? 2、 mean(v.) + to(v.) 意思是: 例如:I don’t mean to make you angry. 我不是故意让你生气的。 3、 mean(adj.) + to(v.) 意思是: 例如:He was mean to her. 他对她很残忍。 4、 mean(v...
Whom do you mean by “they”? 你说“他们”,指的是谁? I mean the red one, not the green one. 我说的是那个红的,不是那个绿的。 三是表示“意味着”,后面可以接名词、动名词、从句。例如: Silence means consent. 沉默就是同意。 To persevere means victory!坚持...
步骤6: 比较不同 Mean 和 Std 对结果的影响 现在我们可以尝试不同的 Mean 和 Std 来观察其对模型性能的影响。下面是一个简单的例子: # 改变 Mean 和 Std(可以给定不同的均值和标准差)X_scaled_altered=(X-50)/10# 例如:假定我们调整了均值和标准差X_train_alt,X_test_alt,y_train_alt,y_test_alt=...
Mean在这种情况下常用于表达某事物所代表或暗示的意思。例如: - The red light means stop. (红灯亮表示停车。) - His smile meant he was happy. (他微笑说明他很开心。) 2. "打算"或"计划"的含义 Mean在这种情况下常用于表达某人对未来事情的打算或计划。例如: - I mean to study abroad next year....